Safety & Environmental Protection (Deck) USCG Question #3065 (Set 86)

Your vessel's drafts are: FWD 24'-06", AFT 25'-04"; and the KG is 22.2 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the righting arm at 20° inclination.

Official USCG Answer & Rule Citation

Correct Answer: Option C — 1.4 feet

Calculate the mean draft and apply the KG of 22.2 feet to the stability curves. At 20 degrees, the righting arm is extracted from the blue pages. This calculation is a fundamental requirement for mariners to verify the vessel's righting ability and ensure safe operation at various heel angles.

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